Transactions of the American Electrochemical Society Volume 33

Transactions of the American Electrochemical Society Volume 33

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1919 edition. Excerpt: ... anode, the current is lowered... ") is not a typographical error, but is correct. Commenting on Mr. Witherell's recommendation ("What I recommend he should have done to get valuable figures for copper refiners... ") it was not my purpose to obtain figures for the copper refiners, but it was to obtain some data which would be of aid to the copper hydro-electro-metallurgist. I merely presented the results of these experiments, and gave the conclusions, or summary of results, as I saw them. I was in hopes that the paper would be the means of causing some of the practical copper hydro-electro-metallurgists to tell us what they know about the effect of the presence of iron in the copper solutions when the copper is precipitated by use of insoluble anodes..Dr. Fink is right when he states that "this problem of the effect of iron on the electrolysis of copper is rather complex." I am glad that there are a number who are busily engaged on experiments along this line, and I hope that when they finish their experiments we will have the opportunity of seeing the results published. 1 8 It was found that the current-yields (ampere efficiencies) at the cathodes were generally lower than those at the anodes, hence the necessity of making the regular additions of sodium cyanide to the baths. Sodium carbonate and perhaps sodium sulphate are valuable additions to the bath. In baths containing near to the minimum of sodium cyanide, sodium hydroxide lowered both the anode and the cathode yields. The anode yields are high in both hot and cold solutions if a proper quantity of sodium cyanide is present, but the cathode yields are much lower in the cold solution than in the hot. A bath containing 6 oz. (4.5 percent) copper...show more

Product details

  • Paperback | 90 pages
  • 189 x 246 x 5mm | 177g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236760158
  • 9781236760159